This article points out that a lab outbreak could have happened in the United States and many places in the world. We need to avoid demonizing China over this if we want to ever find out the truth and learn how to prevent another pandemic outbreak.
[1] https://web.archive.org/web/20200214144447/https://www.resea...
And that, more than anything else, is why we should be suspicious of "exotic" theories like human intervention. It's an extraordinary claim, and it requires extraordinary proof. You seem to be arguing the opposite, when Occam is clear that we should be betting on natural evolution.
The reality is that epidemiology is not a straight forward nor simple field of research, finding concrete and solid answers is usually way more difficult than most people assume when they want answers to point fingers.